Mesenteric lymph node enlargement is also common in clinical practice and is usually due to acute lymph node enlargement due to infection in the abdominal cavity, most often in children. If the patient is not in obvious discomfort, there is no need for excessive concern or special treatment. If the patient has abdominal pain, diarrhea, abdominal distension, nausea, vomiting and indigestion, oral antibiotics and antiviral drugs such as amoxicillin, ribavirin, etc. can be taken. At the same time, the diet should be light and nutritious, avoid spicy, stimulating and greasy food, eat more fresh vegetables and fruits to replenish vitamins, and drink more water to accelerate the metabolism of the body.